package com.atguigu.springcloud.service;

import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.omg.CORBA.TIMEOUT;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;

import java.util.concurrent.TimeUnit;

@Service
public class PaymentService {
    public String paymentInfo_OK(Integer id) {
        return "线程池: " + Thread.currentThread().getName() + " paymentInfo_OK,id: " + id + "\t" + "O(∩_∩)O哈哈~";
    }

    //如果这个方法出事儿了,哪个方法为这个方法兜底
    //请求超时的设置或者报错
    @HystrixCommand(fallbackMethod = "paymentInfo_TimeOutHandler", commandProperties = {
            @HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds", value = "5000")
    })
    public String paymentInfo_TimeOut(Integer id) {
        int timenumber = 3;
        //int a = 10 / 0;
        try { TimeUnit.SECONDS.sleep(timenumber); } catch (InterruptedException e) { e.printStackTrace(); }
        return "线程池: " + Thread.currentThread().getName() + " paymentInfo_OK,id: " + id + "\t" + "O(∩_∩)O哈哈~"
                + "耗时" + 1 + "秒";
    }

    //兜底方法
    public String paymentInfo_TimeOutHandler(Integer id) {
        return "线程池: " + Thread.currentThread().getName() + "8001 系统忙或运行错误,稍后再试,id: " + id + "\t" + "o(╥﹏╥)o";
    }

    //服务熔断
    @HystrixCommand(fallbackMethod = "paymentCircuitBreaker_fallback",commandProperties = {
            @HystrixProperty(name = "circuitBreaker.enabled",value = "true"),   //是否开启断路器
            @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold",value = "10"),  //请求次数
            @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds",value = "10000"),    //时间窗口期
            @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage",value = "60"),    //失败率达到多少后跳闸
    })
    public String paymentCircuitBreaker(@PathVariable("id") Integer id){
        if(id < 0){
            throw new RuntimeException("******id 不能为负数");
        }
        String serialNumber = IdUtil.simpleUUID();  //UUID.randomUUID();

        return Thread.currentThread().getName()+"\t"+"调用成功，流水号："+serialNumber;
    }
    public String paymentCircuitBreaker_fallback(@PathVariable("id") Integer id){
        return "id 不能负数，请稍后再试，o(╥﹏╥)o  id："+id;
    }

}
